我想要两样东西：第一，更多的钱；第二，更好的工作时间。

I want two things: firstly, more money, and ___secondly, better working hours.

其次，我之前不知道你在为一个致力于拯救野生动物的组织工作，但这听起来非常令人兴奋。

___Secondly, I didn't know that you were working for an organization trying to save wildlife, but it sounds very exciting.

这次旅行因两个原因被取消了。第一，天气很糟糕；第二，几位关键人物生病了。

The trip was canceled for two reasons. Firstly, the weather was terrible, and ___secondly, several key people got sick.